import greenfoot.*;

/**
 * This class defines a crab. Crabs live on the beach.
 */
public class Crab extends Actor
{
    public void act()
    {
        move(-3);
        turnAtEdge();
        control();
    }
    public void turnAtEdge()
    {
        if(isAtEdge()==true)
        {
           turn(60);
           
        }
    }
    
    public void control()
    {
        if(Greenfoot.isKeyDown("left"))
        {
            turn(-15);
        }
        if(Greenfoot.isKeyDown("right"))
        {
            turn(15);
        }
    }  
    
}


